APA (7th ed.) Citation

Duyvis, F. D., & Schippers, M. E. (1961). Document reproduction services: Their efficient organization and management. UNESCO.

Chicago Style (17th ed.) Citation

Duyvis, Frits Donker, and M. E. Schippers. Document Reproduction Services: Their Efficient Organization and Management. [Paris]: UNESCO, 1961.

MLA (9th ed.) Citation

Duyvis, Frits Donker, and M. E. Schippers. Document Reproduction Services: Their Efficient Organization and Management. UNESCO, 1961.